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* [PATCH V3 0/3] gpio: modepin: Add driver support for modepin GPIO controller
@ 2021-08-18  8:10 Piyush Mehta
  2021-08-18  8:10 ` [PATCH V3 1/3] firmware: zynqmp: Add MMIO read and write support for PS_MODE pin Piyush Mehta
                   ` (2 more replies)
  0 siblings, 3 replies; 17+ messages in thread
From: Piyush Mehta @ 2021-08-18  8:10 UTC (permalink / raw)
  To: arnd, zou_wei, gregkh, linus.walleij, michal.simek, wendy.liang,
	iwamatsu, bgolaszewski, robh+dt, rajan.vaja
  Cc: linux-gpio, devicetree, git, sgoud, linux-arm-kernel,
	linux-kernel, Piyush Mehta

This patch adds support for the zynqmp modepin GPIO controller and
documented for the same. GPIO modepin driver set and get the value and
status of the PS_MODE pin, based on device-tree pin configuration.
These four-bits boot-mode pins are dedicated configurable as input/output.
After the stabilization of the system,these mode pins are sampled.

To access GPIO pins, added Xilinx ZynqMP firmware MDIO API support to
set and get PS_MODE pins value and status. These APIs are interface
APIs, between the mode pin controller driver and low-level API.

---
Changes in v2:
- Added Xilinx ZynqMP firmware MMIO API support to set and get pin
  value and status.
- DT Documentation- Addressed review comments: Update commit message
- Modepin driver- Addressed review comments:
  - Update APIs
  - Removed unwanted variables
  - Handle return path for probe function

Review Comments:
https://lore.kernel.org/linux-arm-kernel/20210624205055.GA1961487@robh.at.kernel.org/T/#u

Changes in v3:
- Update example in dt-bindings documentation
- Update probe function return value
- Remove unnecessary print and header file

Review Comments:
https://lore.kernel.org/linux-arm-kernel/20210805174219.3000667-1-piyush.mehta@xilinx.com/#t
---

Piyush Mehta (3):
  firmware: zynqmp: Add MMIO read and write support for PS_MODE pin
  dt-bindings: gpio: zynqmp: Add binding documentation for modepin
  gpio: modepin: Add driver support for modepin GPIO controller

 .../bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml    |  43 ++++++
 drivers/firmware/xilinx/zynqmp.c                   |  46 +++++++
 drivers/gpio/Kconfig                               |  12 ++
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-zynqmp-modepin.c                 | 153 +++++++++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h               |  14 ++
 6 files changed, 269 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/xlnx,zynqmp-gpio-modepin.yaml
 create mode 100644 drivers/gpio/gpio-zynqmp-modepin.c

-- 
2.7.4


^ permalink raw reply	[flat|nested] 17+ messages in thread

end of thread, other threads:[~2021-09-22 10:23 UTC | newest]

Thread overview: 17+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-18  8:10 [PATCH V3 0/3] gpio: modepin: Add driver support for modepin GPIO controller Piyush Mehta
2021-08-18  8:10 ` [PATCH V3 1/3] firmware: zynqmp: Add MMIO read and write support for PS_MODE pin Piyush Mehta
2021-08-18  8:10 ` [PATCH V3 2/3] dt-bindings: gpio: zynqmp: Add binding documentation for modepin Piyush Mehta
2021-08-18  9:00   ` Ahmad Fatoum
2021-08-18  9:38     ` Michal Simek
2021-08-18  9:55       ` Ahmad Fatoum
2021-08-18 10:01         ` Michal Simek
2021-08-23 18:09   ` Rob Herring
2021-08-18  8:10 ` [PATCH V3 3/3] gpio: modepin: Add driver support for modepin GPIO controller Piyush Mehta
2021-08-18  8:52   ` Ahmad Fatoum
2021-08-18 10:09     ` Piyush Mehta
2021-08-18 13:05       ` Ahmad Fatoum
2021-08-23  8:02   ` Bartosz Golaszewski
2021-08-23  8:14     ` Michal Simek
2021-09-22 10:18       ` Bartosz Golaszewski
2021-09-22 10:21         ` Bartosz Golaszewski
2021-09-22 10:23           ` Michal Simek

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